Reuse evaluation system for catalyst

Abstract

A reuse evaluation system is a system that performs an evaluation to reuse a catalyst in a state where the catalyst that purifies an exhaust gas of an engine of a vehicle 1 is mounted on the vehicle. The reuse evaluation system includes a deterioration estimator that estimates a degree of deterioration of the catalyst based on an operating state of the vehicle, a reuse setting unit that sets a range of the degree of deterioration of the catalyst as a reuse range of the catalyst according to a usage of reuse of the catalyst, and a reuse determining unit that determines that the catalyst is reusable in the reuse usages when the degree of deterioration of the catalyst estimated by the deterioration estimator is within the reuse range set by the reuse setting unit.

What is claimed is: 
     
       1. A reuse evaluation system for performing an evaluation to reuse a catalyst in a state where the catalyst that purifies an exhaust gas of an engine of a vehicle is mounted on the vehicle, the system comprising:
 a processor configured to: 
 determine a degree of deterioration of the catalyst based on an operating state of the vehicle; 
 set one range of a plurality of ranges of degrees of deterioration of the catalyst as a reuse range of the catalyst according to a usage of reuse of the catalyst, the reuse range being a range of reuse of the catalyst upon a separate use after a use in the vehicle, and each of the plurality of ranges of degrees of deterioration of the catalyst is based on a different reusability of the catalyst; and 
 determine that the catalyst is reusable for the reuse range upon the separate use when the determined degree of deterioration of the catalyst is within the set reuse range. 
 
     
     
       2. The reuse evaluation system for the catalyst according to  claim 1 , further comprising a misfire detector that detects a misfire of the engine,
 wherein when the misfire detector has detected the misfire of the engine, the processor determines that the catalyst is unreusable. 
 
     
     
       3. The reuse evaluation system for the catalyst according to  claim 1 , wherein the processor determines the degree of deterioration of the catalyst based on at least one of an output accumulated time, a bed temperature accumulated time, or a combustion accumulated time in a time period from when the vehicle was manufactured until the degree of deterioration of the catalyst is determined, the accumulated time being an accumulated time where the engine is within a predetermined output range, the bed temperature accumulated time being an accumulated time where a bed temperature of the catalyst is within a predetermined range, and the combustion accumulated time being an accumulated time where the engine performed lean burn. 
     
     
       4. The reuse evaluation system for the catalyst according to  claim 3 , wherein the processor is configured to:
 perform machine learning of a calculation of the degree of deterioration of the catalyst using the output accumulated time, the bed temperature accumulated time, the combustion accumulated time, and the degree of deterioration of the catalyst as teacher data for each catalyst of a plurality of catalysts, and 
 receive the output accumulated time, the bed temperature accumulated time, and the combustion accumulated time of a catalyst to determine a target degree of deterioration, and calculate the degree of deterioration of the catalyst as the target degree of deterioration. 
 
     
     
       5. The reuse evaluation system for the catalyst according to  claim 3 , wherein the processor is configured to determine a progress of the degree of deterioration of the catalyst corresponding to the accumulated time from any one of the accumulated times of the output accumulated time, the bed temperature accumulated time, or the combustion accumulated time, and the determined degree of deterioration of the catalyst. 
     
     
       6. The reuse evaluation system for the catalyst according to  claim 1 , wherein the processor is configured to:
 set the one range of the plurality of ranges of the degree of deterioration of the catalyst for each of a plurality of reuse usages, and 
 determine whether the catalyst is reusable based on the one range of the plurality of ranges of the degree of deterioration of the catalyst set for each of the plurality of reuse usages. 
 
     
     
       7. The reuse evaluation system according to  claim 1 , wherein the processor is configured to:
 determine the degree of deterioration of the catalyst of each of a plurality of vehicles with respect to catalysts of the plurality of the vehicles, and 
 identify a vehicle including a catalyst determined to be reusable among the plurality of vehicles and identify a number of the vehicle.